| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.beam.sdk.io; |
| |
| import java.util.Map; |
| import org.apache.avro.Schema; |
| import org.apache.avro.file.CodecFactory; |
| import org.apache.beam.sdk.io.FileBasedSink.DynamicDestinations; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableMap; |
| |
| /** |
| * A specialization of {@link DynamicDestinations} for {@link AvroIO}. In addition to dynamic file |
| * destinations, this allows specifying other AVRO properties (schema, metadata, codec) per |
| * destination. |
| */ |
| public abstract class DynamicAvroDestinations<UserT, DestinationT, OutputT> |
| extends DynamicDestinations<UserT, DestinationT, OutputT> { |
| /** Return an AVRO schema for a given destination. */ |
| public abstract Schema getSchema(DestinationT destination); |
| |
| /** Return AVRO file metadata for a given destination. */ |
| public Map<String, Object> getMetadata(DestinationT destination) { |
| return ImmutableMap.of(); |
| } |
| |
| /** Return an AVRO codec for a given destination. */ |
| public CodecFactory getCodec(DestinationT destination) { |
| return AvroIO.TypedWrite.DEFAULT_CODEC; |
| } |
| } |